In 1966, there was ELIZA – she was the first bot, she had roughly 200 lines of code and was exceptionally smart. But you probably don’t know her. Later, was PARRY who was smarter than ELIZA (and could copy a paranoid schizophrenic patient). But you probably don’t know PARRY either, or ALICE in 1995 or JABBERWACKY in 2005. But you do know Siri! And that right there is brilliant marketing.